部分
催化作用
酞菁
镍
材料科学
法拉第效率
碳纤维
氮气
化学
无机化学
化学工程
电极
有机化学
纳米技术
电化学
物理化学
冶金
复合材料
复合数
工程类
作者
Shanhe Gong,Wenbo Wang,Runqing Lu,Minghui Zhu,Haotan Wang,Yun Zhang,Jimin Xie,Chunxia Wu,Jun Liu,Mengxian Li,Shouyan Shao,Guisheng Zhu,Xiaomeng Lv
标识
DOI:10.1016/j.apcatb.2022.121813
摘要
The poor stability of heterogenized nickel phthalocyanine (NiPc) has hindered its application as a desirable catalyst for electrocatalytic carbon dioxide reduction. Herein, the electrocatalytic stability of heterogenized NiPc on nitrogen-doped hollow carbon nanospheres ([email protected]) can be optimized via mediating NiPc into Ni-NC moiety (Ni-NC/NHCSs-Y) to construct a stable Ni catalytic unit. Different from the poor activity of [email protected] (CO Faradaic efficiency, FECO< 80%, stability < 1200 s), the optimal catalyst (Ni-NC/NHCSs-600) with unsaturated Ni-N3 nitrogen-vacancy structure, displays FECO of 98.57% and CO turnover frequency of 3.75 s−1 at − 0.87 V vs. RHE, and stable operation over 14 h (−0.82 V vs. RHE). The stabilization mechanism and the temperature effect on the structure-activity relationship are systematically explored, which successfully steers the design of stable Ni-NC catalytic unit on different carbon substrate, while a zinc-CO2 rechargeable battery is constructed, displaying a peak power density of 0.64 mW cm−2 and FECO of 91.45%.
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